ASTROSAT CZTI

Data Quality Report

Orbit 19734

Creation date: 2024-06-27T18:06:10.859641
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_013T01_9000002944_19734cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19734cztM0_level2_quad_clean.evt
Size (bytes)651,746,88090,221,760
Size621.6 MB 86.0 MB
Events in quadrant A4,361,734548,959
Events in quadrant B4,280,466559,305
Events in quadrant C5,081,982528,198
Events in quadrant D5,441,044509,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185573
B0180703
C0203683
D0218553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84385566.589239%
B84385186.138895%
C84375606.637430%
D84387568.959469%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8608 8440 41 41 0.48% 0.49%
B 8608 8440 1 1 0.01% 0.01%
C 8607 8437 1 1 0.01% 0.01%
D 8608 8439 251 251 2.92% 2.97%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 254 243982 1123.33 1062 1037 216.3
A 9 143 25806 114.53 1062 1037 216.3
A 0 226 9388 38.61 1062 1037 216.3
B 4 216 52255 247.52 1061 1029 207.0
B 0 197 25651 118.97 1061 1029 207.0
B 12 111 25505 118.26 1061 1029 207.0
C 3 233 912585 3785.18 1022 1024 240.8
C 14 238 154572 637.59 1022 1024 240.8
C 7 247 22033 87.24 1022 1024 240.8
D 1 52 1238902 4888.18 1029 996 253.2
D 7 238 192699 756.99 1029 996 253.2
D 12 218 56057 217.42 1029 996 253.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter